diff --git a/README.md b/README.md
index 928dddb..ae1b982 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,194 @@
 # proxy
 
+## Install openresty
+
+## Install redis
+
+## install lua plugin
+```bash
+apt install luarocks
+sudo luarocks install lua-resty-auto-ssl
+```
+
+
+
+## openresty config
+
+
+```bash
+mkdir /etc/ssl/
+
+openssl req -new -newkey rsa:2048 -days 3650 -nodes -x509   -subj '/CN=sni-support-required-for-valid-ssl'   -keyout /etc/ssl/resty-auto-ssl-fallback.key   -out /etc/ssl/resty-auto-ssl-fallback.crt
+
+openssl req -new -newkey rsa:2048 -days 3650 -nodes -x509   -subj '/CN=sni-support-required-for-valid-ssl'   -keyout /etc/ssl/resty-auto-ssl-fallback.key   -out /etc/ssl/resty-auto-ssl-fallback.crt
+
+```
+
+
+/etc/openresty/nginx.conf
+
+```
+#user  nobody;
+worker_processes 4;
+
+#error_log  logs/error.log;
+#error_log  logs/error.log  notice;
+#error_log  logs/error.log  info;
+
+#pid        logs/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+
+http {
+    client_max_body_size 4g;
+
+
+    lua_shared_dict auto_ssl 100m;
+    lua_shared_dict auto_ssl_settings 64k;
+
+    resolver 8.8.4.4 8.8.8.8;
+
+    init_by_lua_block {
+        auto_ssl = (require "resty.auto-ssl").new()
+	auto_ssl:set("storage_adapter", "resty.auto-ssl.storage_adapters.redis")
+        auto_ssl:set("allow_domain", function(domain)
+            return true
+        end)
+        auto_ssl:init()
+    }
+
+    init_worker_by_lua_block {
+      auto_ssl:init_worker()
+    }
+
+    ssl_session_cache   shared:SSL:10m;
+    ssl_session_timeout 10m;
+
+    server {
+      listen 127.0.0.1:8999;
+
+      # Increase the body buffer size, to ensure the internal POSTs can always
+      # parse the full POST contents into memory.
+      client_body_buffer_size 128k;
+      client_max_body_size 128k;
+
+      location / {
+        content_by_lua_block {
+          auto_ssl:hook_server()
+        }
+      }
+    }
+
+    include       mime.types;
+    default_type  application/octet-stream;
+
+    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+    #                  '$status $body_bytes_sent "$http_referer" '
+    #                  '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log /var/log/nginx/access.log;
+    error_log /var/log/nginx/error.log;
+
+    sendfile        on;
+    #tcp_nopush     on;
+
+    #keepalive_timeout  0;
+    keepalive_timeout  65;
+
+    #gzip  on;
+    include sites-enabled/*;
+
+}
+
+```
+
+
+/etc/openresty/autossl.conf
+
+```
+  ssl_protocols     TLSv1 TLSv1.1 TLSv1.2;
+  ssl_prefer_server_ciphers  on;
+  ssl_ciphers EECDH+CHACHA20:EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256:EECDH+3DES:RSA+3DES:!MD5;
+
+  ssl_certificate_by_lua_block {
+    auto_ssl:ssl_certificate()
+  }
+
+  location /.well-known/acme-challenge/ {
+    content_by_lua_block {
+      auto_ssl:challenge_server()
+    }
+  }
+
+  ssl_certificate /etc/ssl/resty-auto-ssl-fallback.crt;
+  ssl_certificate_key /etc/ssl/resty-auto-ssl-fallback.key;
+
+```
+
+
+/etc/openresty/sites-enabled/000-proxy
+
+
+```
+server {
+	listen 80;
+	listen 443 ssl;
+
+	include autossl.conf;
+
+	location / {
+		resolver 10.0.3.1;  #8.8.4.4;  # use Google's open DNS server
+
+		set $target '';
+		access_by_lua '
+		    local key = ngx.var.host
+		    if not key then
+			ngx.log(ngx.ERR, "no user-agent found")
+			return ngx.exit(400)
+		    end
+
+		    local redis = require "resty.redis"
+		    local red = redis:new()
+
+		    red:set_timeout(1000) -- 1 second
+
+		    local ok, err = red:connect("127.0.0.1", 6379)
+		    if not ok then
+			ngx.log(ngx.ERR, "failed to connect to redis: ", err)
+			return ngx.exit(500)
+		    end
+
+		    local host, err = red:hget(key, "ip")
+		    if not host then
+			ngx.log(ngx.ERR, "failed to get redis key: ", err)
+			return ngx.exit(500)
+		    end
+
+		    if host == ngx.null then
+			ngx.log(ngx.ERR, "no host found for key ", key)
+			return ngx.exit(400)
+		    end
+		    ngx.log(ngx.WARN, "==Found match!!!  ", key, host)
+		    ngx.var.target = host
+		';
+
+
+		proxy_pass http://$target;
+		proxy_set_header X-Real-IP  $remote_addr;
+		proxy_set_header X-Forwarded-For  $remote_addr;
+		proxy_set_header Host $host;
+		add_header X-Target-Host $target;
+		proxy_set_header Upgrade $http_upgrade;
+		proxy_set_header Connection "upgrade";
+	}
+}
+```
+
+## ref
+
+https://blog.trackets.com/2014/05/17/ssh-tunnel-local-and-remote-port-forwarding-explained-with-examples.html
+https://github.com/GUI/lua-resty-auto-ssl